Hi Mayank,
the steps in order to remove a table are:
- Remove UDO (if exists)
- Delete Table
Its the reverse order for creating an udo.
This moment you have problem because the "physical" table not exists. Make from the SQL Management Studio one with the name AND the specific field name (doesn't matter for other attributes like length etc) and you will be able to delete from the UI.
Good Luck
Evanggelos D. Plagianos